Johnny pushes a crate 5.0 meters across the floor with a force of 15 newtons. How much work does he do?

A. 0.33 Joules

B. 75 Joules

C. 3 Joules

D. 45 Joules

Must a new substances be formed when you observe a chemical property? Explain.

According to Hubble's law, what is the recessional velocity of a galaxy that is 108 light-years away from us? (Assume a Hubble constant of 22 km/s per million light-years.)

What are some examples of static force?

An atom with a positive charge is an anion. a. true b. fals

Elaborate on the fundamental difference between fission and fusion reactions.

How is sun related to nuclear, electromagnetic, and heat energy?

Studies of gymnasts show that their high rate of injuries to the Achilles tendon is due to tensions in the tendon that typically reach 12 times body weight.

The total mechanical energy of a system: A) can never be negative. B) is constant, if only conservative forces act. C) is either all kinetic energy or all potential energy, at any one instant.

If the torque on an object adds up to zero: A) the object could be accelerating linearly but it could not be turning. B) the object is at rest. C) the object cannot be turning. D) the object could be both turning and accelerating linearly.

What to do if vehicle struck by lightning